A5012378078- Atmospheric chemistry and aerosols
- Atmospheric and Environmental Gas Dynamics
- Atmospheric Ozone and Climate
- Air Quality and Health Impacts
- Atmospheric aerosols and clouds
- Fire effects on ecosystems
- Microplastics and Plastic Pollution
- Indoor Air Quality and Microbial Exposure
- Air Quality Monitoring and Forecasting
- Recycling and Waste Management Techniques
- Radioactivity and Radon Measurements
- Climate change and permafrost
- Electrochemical sensors and biosensors
- Pharmacological Effects and Assays
- Plant responses to elevated CO2
- Marine and coastal ecosystems
- Biosensors and Analytical Detection
- Polar Research and Ecology
- Environmental Impact and Sustainability
- Electrochemical Analysis and Applications
- Climate variability and models
- Vehicle emissions and performance
- Cryospheric studies and observations
- Microbial Community Ecology and Physiology
- Geology and Paleoclimatology Research
Japan Agency for Marine-Earth Science and Technology
2016-2025
Shandong University of Science and Technology
2023
Suzhou University of Science and Technology
2023
United States Global Change Research Program
2021
Hokkaido University
2011-2020
Nanjing University of Information Science and Technology
2016-2019
China Meteorological Administration
2018
Institute of Tibetan Plateau Research
2016
Chinese Academy of Sciences
2016
Abstract. Winter has the worst air pollution of year in megacity Beijing. Despite extensive winter studies recent years, our knowledge sources, formation mechanisms and evolution aerosol particles is not complete. Here we have a comprehensive characterization variations processes submicron aerosols that were measured by an Aerodyne high-resolution mass spectrometer from 17 December 2013 to January 2014 along with offline filter analysis gas chromatography/mass spectrometry. Our results...
Abstract. Biomass burning (BB) largely modifies the chemical composition of atmospheric aerosols on globe. We collected aerosol samples (TSP) at Cape Hedo, subtropical Okinawa Island, from October 2009 to February 2012 study anhydrosugars as BB tracers. Levoglucosan was detected dominant anhydrosugar followed by its isomers, mannosan and galactosan. found a clear seasonal trend levoglucosan with winter maxima summer minima. Positive correlation between nss-K+ (r = 0.38, p < 0.001); latter...
Abstract. Biomass burning can significantly impact the chemical and optical properties of carbonaceous aerosols. Here, biomass impacts were studied during wintertime in a megacity Nanjing, eastern China. The high abundance tracers such as levoglucosan (lev), mannosan (man), galactosan (gal) non-sea-salt potassium (nss-K+) was found period with concentration ranges 22.4–1476 ng m−3, 2.1–56.2 1.4–32.2 m−3 0.2–3.8 µg respectively. significant contribution to water-soluble organic carbon (WSOC;...
Microplastic pollution has become an urgent issue because it adversely affects ecosystems. However, efficient methods to detect and characterize microplastic particles are still in development. By conducting a series of laboratory assessments based on near-infrared hyperspectral imaging the wavelength range 900-1700 nm, we report fundamental spectral features (i) 11 authentic plastics (ii) filter substrate materials. We found that different plastic polymers showed distinct at 1150-1250...
Abstract. Forest wildfires in interior Alaska represent an important black carbon (BC) source for the Arctic and sub-Arctic. However, BC observations have not been sufficient to constrain range of existing emissions. Here, we show our mass concentrations monoxide (CO) mixing ratios Poker Flat Research Range (65.12° N, 147.43° W), located central Alaska, from April 2016 December 2020. The medians, 10th percentile ranges, 90th ranges hourly concentration CO ratio throughout observation period...
Abstract Primary biological aerosol particles (PBAPs) play an important role in affecting atmospheric physical and chemical properties. Aerosol samples were collected at Cape Hedo, Okinawa Island, Japan, from October 2009 to February 2012 analyzed for five primary saccharides four sugar alcohols as PBAP tracers. We detected high levels of sucrose spring when blossoming plants happens prolifically emits pollen the air. Concentrations glucose, fructose, trehalose showed higher than other 2010....
Pollutants emitted from wildfires in boreal Eurasia can be transported to the Arctic, and their subsequent deposition could accelerate global warming. The Moderate Resolution Imaging Spectroradiometer (MODIS) MCD64A1 burned area product is basis of fire emission products. However, uncertainties due "moderate resolution" (500 m) characteristic MODIS sensor introduced. Here, we present a size-dependent validation with reference higher resolution (better than 30 satellite products (Landsat 7...
Abstract. A long-term, robust observational record of atmospheric black carbon (BC) concentrations at Fukue Island for 2009–2019 was produced by unifying the data from a continuous soot monitoring system (COSMOS) and Multi-Angle Absorption Photometer (MAAP). This then used to analyze emission trends China. We identified rapid reduction in BC (-5.8±1.5) % yr−1 or −48 2010 2018. concluded that an change (-5.3±0.7) yr−1, related changes China as much −4.6 main underlying driver. evaluation made...
Abstract. We implemented a tagged tracer method of black carbon (BC) into global chemistry transport model, GEOS-Chem, examined the pathways and efficiency long-range from variety anthropogenic biomass burning emission sources to Arctic, quantified source contributions individual emissions. Firstly, we evaluated simulated BC by comparing it with observations at Arctic sites sensitivity an aging parameterization wet scavenging rate ice clouds. For tagging BC, added tracers distinguished types...
Global warming has resulted in substantial glacier retreats high-elevation areas, exposing deglaciated soils to harsh environmental conditions. Autotrophic microbes are pioneering colonizers the and provide nutrients extreme ecosystem devoid of vegetation. However, autotrophic communities remain less studied soils. We explored diversity succession cbbL gene encoding large subunit form I RubisCO, a key CO2-fixing enzyme, using molecular methods along 10-year deglaciation chronosequence on...
Abstract. Both primary biological aerosol particles (PBAPs) and oxidation products of biogenic volatile organic compounds (BVOCs) contribute significantly to aerosols (OAs) in forested regions. However, little is known about their relative importance diurnal timescales. Here, we report biomarkers PBAP secondary (SOAs) for variability a temperate coniferous forest Wakayama, Japan. Tracers fungal spores, trehalose, arabitol mannitol, showed higher levels nighttime than daytime (p < 0.05),...
Ice-nucleating particles (INPs) significantly influence aerosol–cloud precipitation interactions at regional and global scales. However, information regarding the concentrations origins of INPs over open ocean, particularly high latitudes, remains insufficient due to access difficulties. In this study, we investigated western North Pacific Arctic Ocean through ship-borne observations conducted in early autumn 2016. The number (NINPs) active −25 °C (NINPs(−25 °C)) −15 (NINPs(−15 varied from...
Abstract East Asia is the world's greatest source region for emission of anthropogenic aerosols and their precursors due to rapid industrialization intensive biomass burning (BB) activities. BB emits specific organic tracers such as levoglucosan, mannosan, galactosan, which are produced by pyrolysis cellulose hemicellulose then transported downwind western North Pacific westerly winds. Here we present long‐term observations over remote Chichijima Island in (WNP) from 2001 2013. Elevated...
Abstract. The Arctic environment is undergoing rapid changes such as faster warming than the global average and exceptional melting of glaciers in Greenland. Black carbon (BC) particles, which are a short-lived climate pollutant, one cause glacier melting. However, sources BC particles still uncertain. We simulated potential emission sensitivity atmospheric present over (north 66∘ N) using FLEXPART (FLEXible PARTicle) Lagrangian transport model (version 10.1). This version includes new...
Abstract. Understanding the global distribution of atmospheric black carbon (BC) is essential for unveiling its climatic effect. However, there are still large uncertainties regarding simulation BC transport due to inadequate information about removal process. We accessed wet rate in East Asia based on long-term measurements over 2010–2016 period at three representative background sites (Baengnyeong and Gosan South Korea Noto Japan). The average rate, represented by efficiency (TE), i.e.,...
Abstract. Winter has the worst air pollution in a year megacity of Beijing. Despite extensive winter studies recent years, our knowledge on sources, formation mechanisms and evolution aerosol particles is not complete. Here we have comprehensive characterization variations processes submicron aerosols that were measured by an Aerodyne high-resolution mass spectrometer from December 17, 2013 to January 2014 along with offline filter analysis gas chromatography/mass spectrometry. Our results...